Layout in Flowcode 4. Need help. LEDs and Switches

[HMS]

OK I have to do a little project in Flowcode 4 in university but I have some problems.
I am using an ATmega8 micro controller.

I have 4 Input signals and 8 output LEDs.

0 = off / LED (PWM 0%)
1 = on / LED (PWM 100%)
2 = LED (PWM 30%)

IF THEN
INP0 = 0 OUT0 .. OUT2 / OUT4 .. OUT6 = 1
INP0 = 1 OUT0 .. OUT2 / OUT4 .. OUT6 = 2

INP1 = 1 OUT1 = 2
INP2 = 1 OUT5 = 2

INP3 = 1 OUT3 / OUT7 = 1

Whats the best way to do this?

I know that I have 2 PWM Generators on this micro controller.
Can I use the calculations like:
eg:
IF Input 0 is high send "PWM signal 1" to Output Port (eg. PB1, PB2, PC1, PC2)

Thanks

[Benj]

Hello,

You may be better off looking at this guide to creating software PWM and you can only control up to two outputs pins with PWM.

http://www.matrixmultimedia.com/article.php?a=52

[HMS]

and with the software pwm it is possible to do this?
then i will try this.

one other question.
I want to light up one of the leds when a toogle to make switch is pressed for one time, but the the led should light up 2 seconds longer then the switch is pressed. The delay funktion is not working, because the whole system waits the 2seconds.
is there a formula to set the time the led should light up?

[Benj]

Hello,

You need to create an endless loop to keep reading your switches etc.

Inside this loop add a small delay eg 10ms.

When you detect the switch is pressed output 1 to the LED and then reset a count variable to 0.

Every iteration around the loop add 1 to the count value and do a test to see if the count value is greater then 200. If it is then you have waited 2 second and you can switch off the LED.

That should give you a nice 2 second delay without holding up your program.

[HMS]

Hi,

thanks for this info, but i dont understand this, because my english is not the best
can you make a small example for me in a "*.fcf_avr" file?

that would be great.


the pwm signals are working at the moment

[medelec35]

can you make a small example for me in a "*.fcf_avr" file?

that would be great.

Here is a basic version.
You will need to alter configuration settings so will work on your hardware.

Martin

[HMS]

that looks great.
i will give this a try tomorrow mornig.

thanks thanks

[HMS]

Hey thanks very much for everything.
I tried now to add a second switch and a second led.

but without success.
Only the first macro starts.

whats the best way to do this.

[Benj]

Hello,

Your macros had while 1 loops so once you jumped into one you would never come back.

Here is a example that allows 2 channels. Note that the simulation is a bit slow but the timings on actual hardware should be pretty much bang on.

[HMS]

Hi,

thanks very very much again.
I had to to a lot of work, so i was not able to work on this.
Today I programmed my Atmega8 the first time.

And now there is a Problem.
Its not really working.

The LED is not turning on when I push and release the button.
No It only turns on when I hold the button 2 seconds and goes of when i release it.

i am not sure whre is the problem. in the simulation it works perfectly.